Dunefarble Posted January 1, 2022 Share Posted January 1, 2022 I'm having trouble with one of my sponge filters - the black background tank. Bubble size has been large and the water has been cloudy for about a week now, versus the tank with the green background. I took the filter out and cleaned it, cleaned the airstone, and even changed the airpump without getting any change. Its got a ziss airstone and I normally run it on a nano USB airpump but have swapped it to a penn plax 2k3 30 gallon. The tank is a 10. If I unplug the air pump I can blow through the tubes just fine its just.... not performing to the same level as my other tank. Any suggestions? Link to comment Share on other sites More sharing options...
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